impropriety

impropriety [ im-pruh'-PRAHY-i-tee ]
[ noun ]

MEANING :
1. an improper act or state
2. quality of being inappropriate or unsuitable
3. an erroneous or incorrect expression
4. the use of an improper or unsuitable word, phrase or expression

USAGE EXAMPLE 1 :
The lecturer reported the impropriety of his behaviour to the principal.

USAGE EXAMPLE 2 :
Mr Blair last night denied any impropriety and insisted all his political and charitable activities were being kept completely separate.